2Clown2 said:
Took the Vapor line off at the Canister and applied vacuum to the tank. It will not hold any. How does the gas tank vent, if this Vapor line is the only line to it?
I will test the Canister and Purge Sol first thing.
OPERATION
The Evaporative Emissions (EVAP) solenoid receives 12 volts from the fuse panel. The Powertrain Control Module (PCM) energizes the EVAP solenoid by grounding CKT 428. When the solenoid is energized, it allows the canister to purge. When a purge mode is commanded, stored fuel vapor is drawn into the inner dip tube through a calibrated orifice at the base of the tube. Any liquid trapped in the liquid well is also drawn into the inner dip tube through a smaller calibrated orifice. Fresh air is drawn into the canister at the top mounted vent.
Under cold engine, "OPEN LOOP," or idle conditions, the solenoid is de-energized by the PCM, which closes the purge solenoid and blocks vacuum to the canister.
The canister will be enabled (PCM energizes the solenoid) when:
Coolant is above 80°C (176°F).
Closed loop has been achieved for at least 30 seconds.
The throttle switch is open.
Vehicle speed greater than 10 mph.
Engine speed above a threshold. OR
Code P013, P017, P042, P043, P044, or P045 is present.
If the solenoid is closed, (not receiving power or has a stuck plunger), the canister will not purge to the intake manifold. This will prevent the canister from purging fuel vapors and could result in a complaint of fuel odors coming from the engine compartment.
FUNCTIONAL TEST
Attach a hose to the fuel vapor port (from fuel tank) of the canister and attempt to blow through it. Air should pass into canister, If not, replace the canister.
Disconnect the EVAP solenoid electrical connector, attach a hose to the upper port of the canister, and attempt to blow through it. Air should not pass into the canister. If air passes, replace the canister.
Reconnect all purge hoses and the solenoid electrical connector.